|
|
|
f-stop = Focal Length / Aperture Size Aperture Size = Focal Length / f-stop diagonal = sqrt(a^2 + b^2) == Lens Equation == 1 / Focal Length = (1 / Distance to Image) + (1 / Distance to Object) where Focal Length is lens focal length Distance to Image is distance from lens to 'film' (ie screen) Distance to Object is distanct from lens to LCD == Speaker Impedance == Speakers In Series: Rt = R1 + R2 +.. Speakers In Parallel: 1/Rt = 1/R1 + 1/R2 +.. Where Rt is Total Impedance |